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Complete the square: x^2 + 2x - 3 = 0
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1 vote
Complete the square:
x^2 + 2x - 3 = 0

User Rolf Rander
by
7.6k points

2 Answers

3 votes

x^(2) +2x-3=0 \\\\ (x)^2+2(x)(1) +(1)^2 -1^2-3 =0 \\\\ (x+1)^2-4 = 0 \\\\ (x+1)^2 = 4 \\\\ x+1 = \± √(4) \\\\ x = -1 ~\±2 \\\\ \therefore x = 1 ~~~or~~~ x = -3
Complete the square: x^2 + 2x - 3 = 0-example-1
User Ataur Rahman Munna
by
7.7k points
6 votes
I got x=plus or minus 1
User Rahul Raut
by
8.0k points
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